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There are deck restoration products and oil-based wood stains that can help bring back some of the color and shine to your faded Trex decking. However, if your boards are suffering from serious fading due to UV rays or chemical cleaning products, don’t expect miracles. Also, these products are only suitable for use on the older Trex boards, not the capped, second-generation Trex products. 

The best way to sand a deck is by cleaning it, sanding the boards and stairs with 60- or 80-grit sandpaper, and sanding the railings and posts with 80-grit sandpaper. You should sand in the direction of the wood grain to avoid damaging the timber. When sanding your deck, use medium pressure and aim for an even sand. Pressing too hard with a sander can damage decks, as most are softwoods.

Any wood deck provides some ventilation to the area below, as is the nature of that type of deck design. However, areas that experience excessive humidity and associated moisture benefit greatly from a dedicated ventilation system in the form of strip vents. This addition helps the various wood boards contract and expand evenly throughout the years and reduces the chances of twisting, warping, and buckling.

Will pressure-treated wood rot? This wood could eventually suffer from rot, although it takes longer compared to untreated wood. Even though the chemicals applied to pressure-treated wood protect it, they eventually dissipate and leave the wood vulnerable. You can delay the appearance of rot in the treated wood by reducing its direct exposure to moisture and by painting it. Using fewer screws or nails in the wood—and thereby creating fewer holes in it—also delays the chances of rot forming.